Wie stout is krijgt lekkers wie goed is de roe
"Those who are naughty receive sweets, those who are good get the birch."
In specific terms, this can represent a child mischievously eating candies while another one diligently doing his homework is being symbolically pointed with a birch twig. Thus, the revised text can be:
"A mischievous child enjoying some candies, while another dutiful child focusing on his homework with a birch twig symbolically pointed at him."